Cash register



March 23 1926. 1,578,209

c. F. RoslEN CASH REGISTER Filed April 2, 1924 Charli F. Rosien MVM Hi' 61H01 www Patented Mar. 23, 1926.

Unirse STATES PATENT oFF-lcs.

(.'lI-IABDES F. ROSIEN, 0F DAYTON, OHIO, ASSIGNOR TO THE NATIONAL I COMPANY, OF DAYTON, OHIO.

CASH REGISTER lclisrr REGISTER.

Application led April 2',

T0 all ywhom t 77mg/ concern Be it known that I, GHAnLns F. RosrnN, a citizen ot the United States, residing at Dayton, in the county of Montgomery and State ot QhiO, have invented certain new and uset'ul Improvements in Cash Registers, of which I declare the following to be a full, clear, and exact description.

This invention relates to improvements in cash registers or accounting machines, and has particular reference to improvements in the printing mechanism oi' such machines.

An object of the invention is to provide a positive quick acting inking ribbon Vtfeed reversing mechanism. I

l lith this and incidental objects in view, vthe invention consists of certain novel I"ea turcs ot construction and combinations ot parts, the essential elements of which are set torth in appended claims and a prei-errer'.i "form ot embodiment of which is hereinafter described with reference to the drawings which accompany and form part of this specification.

Ot said drawings:

Fig. 1 is a side elevation of a printing ribbon feed mechanism.

Fig. 2 is a detail ot a ribbon i Fig. Sis a sectional view or" the ribbon spool taken on the line 3 3 ot Fig. 2.

Fig. 4 is a detail ol the ribbon spool driving, ratchet.

F ig. 5 is a detail ot the ribbon feed reversing mechanism. Y

The general construction of the ribbon feed reversingmechanism disclosed is the same as thatV shown and described in thI Kettering and Chryst Patent `i\lo.'1,137,061, -issued April 27, 1915. This invention is an spool.

improvement applied to that shown in the` above mentioned patent, and is described lin detail as follows.

The ink ribbon 80 (Figs. 1 and 3l is secured at its ends to spools .31 and 32, each ol which is provided with a ratchet 33, having two lugs 41 (Fig. 4) engaging open'- ings 42 (Figs. 5) in the spools. A shat't 34, upon which the upper spool is loosely mounted, carries an arm 35; while a shaft 36, upon wliichtlie lower spool is loosely mounted, carries a lever 37. The arm 35 and lever 37 are connected together by a link 38 carrying a pair of pawls 39 and 40. The pawl 39 is arranged to operate upon the upper ratchet, and the pawl 40 on the lower 1924. Seria No. 703,693.

ratchet, but one or the other of these pawls is always held out of engagement, according to whether 'the ribbon is being wound upon the upper spool or lower spool. `The position ot the pawls is reversed whenever the ribbon is entirely unwound trom one lor the other ot' the spools.

The lever 37 is connected by a link 46 to a bell crank lever 47 mouu ted on a rod 48. The bell crank lever is oscillated during each operation of the machine which, through the link 46, will cause the lever 37 to rock upwardly and return, driving whichever o1'E the ratchets is engaged by its pawl B9 or 40. lVhenv the ribbon is completely `unwound from one of the spools, one ot' a pair of spring actuated levers 49 and 50 will move a plate 51 on its pivot allowinga projection 53 termed on the end et each of the levers 49 and 50 to engage the cut-away portion 54 of flange 55 of the ribbon spools.

There is a plate 51 mounted on each of the ribbon spools. Each plate isheld in normal position by the ribbon which bea-rs on a projection 56 extending laterally from the plate (Figs. 2 and 3) and resting in a depressed portion of theY hub of the spool. A portion of the plate 51 is circular in t' rin and, when the platev is in its normal rposition, the circular portionA of the plate is concentric Yith the iange et the spool and overlaps the cut-away portion 54, so that as the spool rotates the projection 53 on the corresponding lever' 49 or 50 will ride on the plate 51 when the cut-away portion 54 of the spool passes the projection 53. n l,

llt/Then the ribbon is unwound 'from a spool, allowing theprojection 53 to engage the cutaway portion 54 ofthe flange of the spool, aliig 57 on the lever ,49 or 50 is brought into the .path ot one ofthe extensions 5S ot' a link carried by a pair of parallel'levers 60 which are pivoted tok the link 38.

The levers 49 and 50 are pivotcd on a stud 61, and are urged towards their respective spools 31 and 32 by a spring 62, which connects the ends 63 and 64 of the levers. Vlhe levers 49 and 50, with their projections 53, ride upon the peripheri'es of the Aflanges 55 and the curved portions of the plates 51 until the ribbon is unwound :trom either spool This 'frees vthe projection 56 on the Ispool from which the vribbon isV unwound and allows the plate 51 to'be swung on its pivot l52wby the-pressure ofthe projection 53, which is then able. to engage the cutaway portion 54 of the flange 55. As the projection 53, of lever 49 or 50, engages the cut-away portion of the flange, the lug 57 is brought into the path of the corresponding extension 58 of the link 59, so that when the link 38 is reciprocated the link 59 will engage the lug 57 and rock the lever GO, upon which it is pivoted, upon their pivots. The levers engage pins 7l, on the pawls 39 and 40, and will positively rock the pawls, the pawl which operates the 'spool from which the ribbon has been unwound being rocked into mesh with its ratchet while the other pawl is rocked out of mesh. The pawls are normally urged into engagement with the ratchets by a spring 72, but are controlled against thc action of the spring by the levers 60.

The ribbon spools are detachable from their respective ratchets so that the spools may be removed from the machine for the convenience of replacing a ribbon without disturbing the feeding mechanism. If the spools are removed when the feeding mechanism is in the positions shown in Fig. l, the upper lever 49 will move counter-clockwise until arrested by the square lug 57 coming into yengagement with the end-58 of the link 59. The lower lever 50 will move clockwise until arrested by the projection 53 coming into engagement v'ith the ratchet 33. The projections 53, (Figs. l and 2) are formed so as to provide an angular edge to be engaged by the flange of the spool, when the spools are returned to their respective positions, to raise the levers 49 and 50 to their normal positions with the projections resting upon the peripheries of t-he flanges as shown in Fig. l.

Operation.

During an operation of a machine to which the ribbon feeding mechanism is attached, the ribbon is wound on one spool and unwound from another spool, Referring to Fig. l, the ribbon is shown as being wound on the lower spool and unwound from the upper spool bythe pawl 40 engaging` the ratchet wheel and moving the lower spool clockwise. The pawl is carried by a reciprocating member which is operated by the driving mechanism.

j The winding of the vribbon on the lower spool will continue until the ribbon is almost entirely unwound from the upper spool or when the last wrapping of ribbon is 'removed from over the projection 56 (Fig. 3) of the movable plate v 51. With the plate no longer retained in position bythe ribbon, the spring-actuated arm 49 will mov-e the plate on its 'pivot, allowing the lever to move counter-clockwise until stopped by the projection 53 'engaging theV depressed portion of the spool `iiange, lin which position the square lug on the lever will beengaged by' the upper end 58 of the link 59 during its reciprocating movement, and cause the lower feeding pawl to be raised out of effective position with the lower spool ratchet andV simultaneously cause the upper paw to be lowered into effective feedingposition with the upper spool ratchet. Upon continued operation of the machine the ribbon will wind on the upper spool and unwind from the lower spool.

lVhen the ribbon is unwound from the lower spool, the lower spring-actuated lever 50 will move clockwise, placing the square lug 5T in the path of the lower end 5S of the link 59 and cause the feeding mechanism to again shift to effective position with the lower spool.

lVhile the form of meclianisn'i herein shown and described is admirably adapted to fulfill the objects primarily stated,`it is to be understood that it is not intended to confine the invention to the one forni of embodiment herein disclosed, for it is susceptible of embodiment in various forms all coming within the scope of the claims which follow.

lWhat is claimed is:

l. In a ribbon reverse mechanism, the combination of two spools, said spools having a circular disk on one end with a portion of its periphery cut away, a plate pivotally mounted on said disk, said plate having a circular portion of the same radius as said disk, a projection on said plate cooperating with a ribbon to hold said plate with its circular portion concentric with said disk in position to cove-r said cut-away portion, means for driving said spools in opposite directions, and spring-actuated means engaging the periphery of si id disks and circular portions of said plate whereby when the ribbon is unwound from either of said spools the plate associated with that spool will be moved out of concentric position with respect to said disk to allow said spring actuated means to enter the cut-away place on said disk and cause said driving means to become effective with respect to said spool.

2. In a ribbon reverse mechanism, the combination of two spools, said spools having a circular disk on one end with a 'portion of its periphery cut away, plate pivotally mounted on said disk, said plate having la circular portion of the saine radius as said disk, a projection on said plate cooperatino' with a ribbon to hold said plate with its circular portion concentric with said disk in position to cover said cut-away portion, means for driving said spools, and means engaging the periphery of said disk and circular portion of said plate whereby when the ribbon is unwound Yfrom either of said spools the plate lassociated with that spool will be moved out of concentric position with iespect to said disk to allow said means engaging the periphery of said disk to enter the cut-away place on said disk and cause said driving means to become eii'ective with respect to said spool.

In a ribbon reverse mechanism, the combination ot two spools, said spools having a circular disk on one end with a portion ot its periphery cut away, a plate pivotally mounted on said disk, said plate having a circular portion of the same' radius as said disk, means whereby said plate is held in a position by a ribbon so that the circular portion of the plate is concentric with said disk and overlapping the cut-away portion ot said disk, means for driving said spools, and means engaging the periphery ot said disk and circular portion of said plate whereby when the ribbon isunwound from either or said spools the plate associated with that spool will be moved out of concentric position with respect to said disk to allow the means engaging the periphery of said disk to enter the cut-away place on said disk and cause said driving means to become effective with respect to said spool.

et. In a ribbon reverse mechanism, the combination ot two spools, means for driving said spools in opposite directions, means i'or maintaining said driving means in etit'ective relation with one spool and in inetfective relation with the other spool, a circula'r disk attached to one end of each spool and having a portion of its periphery cut away, a plate pivotally mounted on said disk, said plate having a circular portion ot thc same radius as said disk, a projection on said plate cooperating with a ribbon to hold said plate with its circular portion concentric with said disk, spring-actuated arms normally engaging thel peripheries of said disks and circular portions of said plates whereby when the ribbon is unwound from one spool the plate associated with that spool will be moved out of concentric position with respect to its disk allowing the spring actuated arm associated with said disk to enplace on said disk and cause become eiiective with with the other ter the cut-away said driving means to this spool and ineffective spool.

5. In a ribbon reverse mechanism, the combination of two spools, means for driving said spools in opposite directions, means tor maintaining said driving means in effective relation with o-ne spool and in ineiiective relation with the other spool, a circular disk attached to one end of each spool and having a portion o'l' its periphery cut away, adjustable means having a circular portion 'ot the same radius as said disk which normally is held concentric with said disk by a ribbon attached to said spools, spring actuated arms normally engaging the periphery oi' said disks and circular portions ot' said plates whereby when the ribon is unwound from one spool the plate associated with that spool will be moved out of concentric position with respect to its disk allowing tlie spring-actuated arm associated. with said disk to enter the cut-away place o-ii said disk and cause said driving means to become etlective with this spool and ineffective with the other spool.

6. In a ribbon reverse mechanism, the combination of two spools, means for driving said spools in opposite directions, means for maintaining said driving means in efective relation with respect to one spool and in ineffective relation with respect to the other spool, a circular disk attached to one end oi? each spool and having a portion of its periphery cut away, a plate pivotally mounted on said disk, said plate having a circular portion of the same radius as said disk, a projection on said plate cooperating with a ribbon to hold said plate with its circular portion concentricv with said disk, and means cooperating with said disk-and said plate to aiiect said driving means and cause a reverse movement of said spools.

7. In a ribbon reversing mechanism, a spool having a iiange with a portion cut away, a plate iiiovably mounted and adapted `to overlap the cut-away portion and provided with aii opening loosely receiving said spool, and a projection on said plate extending in the direction of the length of the spool and located diametrically 'opposite from said cut-away portion.

8. In a ribbon reversing mechanism, a spool having a flange the periphery of whichf comprises a fixed portion, and means for holding the'movable portion in position until a predetermined amount of ribbon has been unwound from said spool. f

9. In a ribbon reversing mechanism, a spool, a plate mounted on said spool and having a movable portion, arranged concentrically withthe spool, and mea-ns adapted to press on said portion to move it toward the axis of the spool when a predetermined amount of ribbon has been unwound from said spool.

In testimony whereof I afiix mv signature.

` CHAR-LES l1". ROSIEN.

portion and a movable 

